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17E637PC22 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

17E637PC22: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include seat_radius: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN, flange_diameter: 2.584 INCHES MINIMUM AND 2.604 INCHES MAXIMUM IN, style_designator: PLAIN FLANGED, under_flange_height: 2.375 INCHES NOMINAL IN, body_inside_diameter: 1.688 INCHES NOMINAL IN, body_outside_diameter: 2.129 INCHES MINIMUM AND 2.130 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-337-7129, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
17E637PC22
NSN: 4820-00-337-7129
FSC: 4820 — Valves, Nonpowered
CAGE: 11660 — WESTINGHOUSE ELECTRIC CORP CONTROL BUSINESS UNIT
SPECIFICATIONS
seat_radius0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
flange_diameter2.584 INCHES MINIMUM AND 2.604 INCHES MAXIMUM IN
style_designatorPLAIN FLANGED
under_flange_height2.375 INCHES NOMINAL IN
body_inside_diameter1.688 INCHES NOMINAL IN
body_outside_diameter2.129 INCHES MINIMUM AND 2.130 INCHES MAXIMUM IN
seating_surface_shapeRADIAL
flange_seat_to_disk_end_height0.375 INCHES NOMINAL IN
NSN4820-00-337-7129
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 17E637PC22 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FLANGE SEAT TO DISK END HEIGHT: 0.375 INCHES NOMINAL IN
•
FLANGE DIAMETER: 2.584 INCHES MINIMUM AND 2.604 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 2.129 INCHES MINIMUM AND 2.130 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 1.688 INCHES NOMINAL IN
•
SEAT RADIUS: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
•
UNDER FLANGE HEIGHT: 2.375 INCHES NOMINAL IN
•
SEATING SURFACE SHAPE: RADIAL
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.375 INCHES NOMINAL IN
FLANGE DIAMETER2.584 INCHES MINIMUM AND 2.604 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER2.129 INCHES MINIMUM AND 2.130 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER1.688 INCHES NOMINAL IN
SEAT RADIUS0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
UNDER FLANGE HEIGHT2.375 INCHES NOMINAL IN
SEATING SURFACE SHAPERADIAL
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 3
1429338Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
40J278PC22Reference document
Same NSN cross-reference
Reference document — Secondary reference
S6100-440433PC22Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 17E637PC22?
17E637PC22 is a SEAT,VALVE.
What parts can replace 17E637PC22?
There are 3 known substitutes for 17E637PC22: 1429338, 40J278PC22, S6100-440433PC22. Substitute compatibility should be verified for your specific system.
What is the NSN for 17E637PC22?
17E637PC22 is cataloged in the U.S. Government catalog under NSN 4820-00-337-7129. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.